Phosphoric acid esters

ABSTRACT

PHOSPHORIC ACID ESTERS OF THE FORMULA   R1-O-P(=S)(-O-R2)-O-C(-R3)=C(-R4)-CO-R5   WHEREIN X REPRESENTS OXYGEN OR SULPHUR, R1 AND R2 EACH INDEPENDENTLY REPRESENT A LOWER ALKYL RADICAL, R3 REPRESENTS HYDROGEN, ALKOXYCARBONYL OR HALOGENO-METHYL RADICAL, R4 REPRESENTS A LOWER ALKOXY, ALKYLTHIO OR DIALKYLAMINO RADICAL AND R5 REPRESENTS A LOWER ALKOXY RADICAL, OR R4 REPRESENTS A LOWER ALKYLTHIO RADICAL AND R5 REPRESENTS A DIALKYLAMINO RADICAL, ARE DISCLOSED. PESTICIDAL COMPOSITIONS AND A METHOD FOR CONTROLLING PETS ARE FURTHER DISCLOSED.

United States Patent 3,733,376 PHOSPHORIC ACID ESTERS Odd Kristiansen, Reinach, Basel-Land, and Kurt Gubler,

Riehen, Basel-Stadt, Switzerland, assignors to Ciba- Geigy Corporation, Ardsley, N.Y.

No Drawing. Filed Sept. 4, 1970, Ser. No. 69,893 Claims priority, application Switzerland, Sept. 10, 1969, 13,751/69 Int. Cl. A01n 9/36; C07f 9/08 US. Cl. 260-941 7 Claims ABSTRACT OF THE DISCLOSURE Phosphoric acid esters of the formula DESCRIPTION OF DISCLOSURE The present invention concerns new phosphoric acid esters, process for the production thereof as well as pesti cidal compositions containing these new phosphoric acid esters as active ingredients and method for the control of pests using the new active substances or compositions containing them.

The new phosphoric acid esters correspond to the Formula I In this formula:

Rs (I) X represents oxygen or sulfur;

R and R each independently represent a lower alkyl radical;

R represents hydrogen, an alkoxycarbonyl or halogenomethyl radical;

R represents a lower alkoxy, alkylthio or dialkylamino radical and R represents a lower alkoxy radical; or

R, represents a lower alkylthio radical and R represents a dialkylamino radical.

In Formula I, by lower alkyl radicals R and R and I in R R and R are meant radicals having 1 to 5 carbon atoms such as methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl or pentyl. The radicals R and R may be identical or different radicals. Such lower alkyl radicals form the alkyl moiety of alkoxy and alkylthio radicals; they also form the alkyl substituents of a dialkylamino group and the alkyl moiety in alkoxycarbonyl radicals R A halogeno-methyl radical R is in particular the trifluoromethyl radical.

The new phosphoric acid esters of Formula I are produced according to the invention by reacting a compound of the Formula II 3,733,376 Patented May 15., 1973 wherein Me represents an alkali metal atom with a phosphoric acid halide of the Formula III R20 wherein Hal represents chlorine or bromine. In the Formulas II and III, the symbols R to R and X have the meanings given for Formula I. Preferably, the reactions are performed in the presence of solvents or diluents inert towards the reaction components. For this purpose aromatic hydrocarbons and halogenated hydrocarbons such as benzene, toluene, xylenes and chlorobenzene have proved suitable; furthermore aliphatic hydrocarbons, ethers, etc. are also suitable. The reaction temperatures are between 0 and C., preferably between 0 and 20 C.

The starting materials of Formula H are known compounds or can be produced by known methods by the condensation of the appropriate esters in the presence of condensation agents. Suitable as ester components are, on the one hand, alkoxy-acetic acid esters, alkylthioacetic acid esters, alkylthio-acetic acid amides, and on the other hand formic acid esters, halogenomethyl-acetic acid ester, and oxalic acid esters; as condensation agents the alkali alkanolates corresponding to the esters as well as alkali metal hydrides are employed.

The new phosphoric acid esters of Formula I have excellent insecticidal and good acaricidal properties. Due to their good effect as stomach poison and contact poison, they are suitable for the control of biting and sucking insects in the protection of plants and stored goods. Furthermore, their favorable toxicity for warm-blooded animals permits their use in veterinary medicine and hygiene. The DL for rats per 05 of the new active substances of Formula I is up to 500 mg./kg. of body weight; whereas the D15 of known phosphoric acid esters which are commercially available, such as firstly 0,0-dimethyl O-(1-methyl-2-chloro-2diethylcarbamyl-vinyl) phosphate [cf-Z Belgian patent No. 552,284, trade name Phosphamidon] and secondly 0,0-dimethyl O-(l-methy1-2- methoxycarbonyl-vinyl) phosphate [cf. US. Pat. No. 2,685,552, trade name Phosdrin], for rats per as is below 50 mg./ kg. of body weight. In addition, the action of the active substances according to the invention starts more rapidly and continues longer than is the case by the above-mentioned known phosphoric acid esters.

Furthermore, it has been found that these active substances of the Formula I have in particular an excellent, long-lasting effect against insects of the families Muscidae, Stomoxidae and Culicidae, e.g. against the polyvalentresistant and normally sensitive house flies (M usca domestica), stable flies (Stomoxys calcitrans) and mosquitoes (e.g. Aedes aegypti, Culex fatigans, Anophenles stephensi); against insects of the families Curculinidae, Bruchididae, Dermestidae, Tenebrionidae and Chrysomelidae, e.g. granary weevils (Sitophilus granarius), bean beetles (Bruchiaus obte'ctus), larder beetles (Dermestes vulpinus), mealworms (Tenebrio molitor), Colorado potato beetles (Lep tinotarsa decemlineata) and their larval stages; against insects of the family Pyralididae, e.g. Mediterranean flour moths (Ephestia kt'ihniella), of the family Blattidae, e.g. cockroaches (Phyllodromia germanica, Periplaneta americana, Blatta orientalis), of the family Aphididae, e.g. bean aphids (A phis fabae), of the family Pseudococcidae, e.g. citrus mealybugs (Planacoccus citri) and of the family *Locustidae, e.g. migratory locusts (Locusta migratoria).

In addition, the active substances of the Formula I according to the invention have a good effect against the larval and adult stages of arachnids, e.g. of the families Acarinae, Ixodidae, Arachnidae and Argasidae.

In admixture with syncrgists and auxiliaries having a similar action such as dibtuyl succinate, piperonyl butoxide, olive oil, and peanut oil, etc., the range of action of the said active substances can be broadened and in particular the insecticidal action can be improved. Likewise, the insecticidal action can be substantially broadened and adjusted to the prevailing conditions by the addition of other insecticides such as, for example, phosphoric, phosphonic, thioand dithiophosphoric acid esters and amides, halogenated hydrocarbons and analogs of l,l-p,p'-dichlorophenyl-2,2,Z-trichloroethane as well as pyrethrines and synergists thereof, acaricidally active substances such as halogenobenzilic acid esters such as 4, -dichlorobenzilic acid esters and 4',4-dibromobenzilic acid esters, insecticidal and acaricidal carbamates, for example oxime carbamates, aryl carbamates and carbamates of heterocyclic compounds which are enolizsble.

INSECTIOIDAL ACTION The insecticidal action of the new phosphoric acid esters is illustrated by the following tests:

(1) Effect as insecticidal contact poison (a) Petri dishes are coated with acetone solutions of the active substances so that they are covered with 0.15 mg. and 1.5 mg. of active substance per square meter. After one hour the following test animals are placed in the dishes:

( 1) polyvalent-resistant house flies (Musca domestica), (2) mosquitoes (Aedes aegypti) In Table 1 the time is given after which all (100%) of the animals are in dorsal position.

(b) 20 mg. of a 1% dust are evenly distributed in Petri dishes. Cockroaches (Phylloa'romia germanica and Periplaneta americana) are then placed in the dishes and kept under normal conditions at 2224 C.

In Table 2 the time is given after which all of the animals are in dorsal position.

(c) Granary weevils are sprayed from a distance of 10 cm. with 2. cubic centimeters of a 1% solution of the active substance in acetone. Immediately after application the animals are transferred to clean Petri dishes and kept at 22 C.

In Table 3 the time is given after which all (100%) of the animals are in dorsal position.

4 Table 2 100% of the animals in dorsal position after x minutes Active substance: (cockroaches) 0,0-dimethyl O-(2-methoxy-2-methoxycarbonylvinyl) phosphorothioate l7 0,0-dimethyl O-(2-methoxy-2-methoxycarbonyl- Table 3 100% of the animals in dorsal position after x minutes or hours Active substance: (granary weevils) 0,0-dimethyl O (2-methoxy-2-methoxycarbonyl-vinyl) phosphorothioate hours 6 0,0-dirnethyl O (2-methoxy-2-methoxycarbonyl-vinyl) phosphate hours 20 0,0-diethyl O (2-methoxy-Z-methoxycarbonyl-vinyl) phosphate minutes 0,0-dimethyl 0-(2-methylthio-2-N,N-dimethylcarbamyl-vinyl) phosphorothioate hours 2 0,0-diethyl O (Z-methylthio-2,N,N-dimethylcarbamyl-vinyl) phosphorothioate hours 7 0,0-dimethyl O-(2-methylthio-2,N,N-dimethylcarbamyl-vinyl) phosphate minutes 0,0-dimethyl O (2-ethylthio-2-N,N-dimethylcarbamyl-vinyl) phosphate minutes.. 90 0,0-dimethyl O (2-ethylthio-2-N,N-dimethy1- carbamyl-vinyl) phosphate minutes 133 0,0-diethyl O-(2-isopropylthio-2,N,N-dimethylcarbamyl-vinyl phosphorothioate hours 8 0,0-dimethyl O-(2-isopropylthio-2-N,N-dimethylcarbamyl-vinyl) phosphate minutes 90 0,0-diethyl O-(2-isopropylthio-2-N,N-dimethylcarbamyl-vinyl) phosphate minutes 90 0,0 dimethyl O (1 methyl 2 chloro -2- N,N diethylcarbamyl vinyl) phosphate (see Table 1) hours 48 (2) Long-lasting insecticidal eflFect (a) Petri dishes which have been coated with 0.15 mg. and 1.5 mg. of active substance per square meter are allowed to stand for 8 days at 24 C. Then polyvalentresistant house flies (Musca domestica) and granary weevils (Sitophilus granaria) are placed on the coatings.

(b) The active substances are applied from an aqueous suspension in a concentration of 1 g. per square meter TABLE 1 Active substance 0,0-dimethyl O-(2-methoxy-2-methoxyearbon l-vin l) hos horothioate 0,0-dirnethy1 O-(2-methoxy-Z-methoxycarbongl-vingl) ghosghate 0,0-d1ethyl O-(2-methoxy-2-methoxycarbonyl-vinyl) phosphate OOO dimethyl O-(2-ethylthio-2-N,N-dimethylcarbam l-vin l -diethyl 0-(2-isopropylthio-2-N,N-dirnethylcarbni nyl-vi ngvg 0,0-dimethyl 0-(l-ethoxycarbonyl-2-methoxy-2-methoxy carbon l-vin l hos hate -di ethyl O-(1-ethoxycarbonyl-2-methoxy-2-methoxyearbonyl-wzinyD pii sphte -drethyl O-(1-tnfiuoromethyl-Z-methoxy-Z-methoxy carbonyl-vinyl)phosphate I 1 hos hate- -d1ethyl 0-(2-methylthio-2-N,N-dimethylcarbarnyl-vinyl phosphate- O-dimethyl O-(2-isopropylthio-2-N N-dirnethylcarbam l-vin 1) has hate... O-dimethyl 0-(l-tzifluoromethyl-2-ipethylthio-Z-methoiiyearb imy l-viri yl) phosphate 8-diethy1 O-(2-1nethylth1o-2-N,N-dimethylcarbamyl-vinyl) phosphorothioate. O

hos horothioate 0,0diethyl O-(2-isopropylthio-2-N,N-dimethylcarbamyl-vlnyl) i hos phate 0,0-dimethyl O-(l-methyl-2-chloro-2-N,N-diethylcarbamybvinyl) phosphate of the animals in dorsal position after (minutes)- House flies Mosquitoes, 1.5 mgJm. 0.15 mg./m. 0.15 mg./m. 1

10 30 10 8 22 4 3O 60 2 60 60 60 10 10 60 l0 18 23 12 6 10 hosphorotllioate :1 1g 30 1 Phosphamidon kno n Bel an Pat H I 30 1 w {I1 .1 tNo 552,234,

to wooden boards. The treated boards are suspended in stables for several days. A control is made after 1 and 8 days by taking the boards into the laboratory and placing stable fiy maggots (Stomoxys calcitrans) and mosquitoes (normally sensitive Aedes aegypti) on them.

In the following Tables 4 and 5, the time is given in minutes and in hours after which the animals (100%) are in dorsal position.

TABLE 4 6 The following examples illustrate the production of the new phosphoric acid esters of Formula *I. Unless expressly stated otherwise, the temperatures are given in degrees centigrade.

EXAMPLE 1 A mixture of 26.4 g. of ethoxyacetic acid ethyl ester and 14.8 g. of formic acid ethyl ester is slowly added dropwise to a suspension of 13.6 g. of sodium ethylate Active substance 0,0-dimethyl O-(2-mcthoxy-2-methoxycarbonyl-vinyl) phosphorothioate 0,0-dimethyl O-(2-methoxy-2-mcthoxyearbonyl-vin 1) phosphate 0,0-diethyl -(2-methoxy-2-mcthoxycarbonyl-vinyl) 0,0-dlethy1 O-(2-isopropylthio-2-N,N-dimethylearbamyl-vinyl 100% of the animals in dorsal position after (minutes)- Flies, Weevils, 1.5 rug/m. 0.15 mg./m.

l Phosphamidan, known from Belgian Patent No. 552,284. 2 Hours.

TABLE 5 100% of the animals in dorsal position after (minutes)- Stable flies Mosquitoes After (days). e 1 8 1 8 Active substance:

0,0-dimethyl O-(2-methoxy-2-methoxycarbonyl-vinyl) phosphorothicate 17 40 10 16 0,0-diethyl O-(2-methoxy-2-methoxyearbonyl-vinyl) phosphate. 90 90 0,0-diethyl O-(1-trifluoromethyl-2methoxy-2-methoxycarhonyl-vinyl) phosphate. 14 30 2 2 0,0-diethyl O-(2-isopropylthio-2-N,N-dimethylearbamyl-vinyl) phosphorotluoate..- 30 30 30 30 0,0-dimethy1 O-(2-n-propylthio-2-N,N-diethylcarbamyl-vinyl) phosphorothloate 30 43 45 54 0,0-dimethy1 O(2-methoxy-2-methoxycarbonyl-vinyl) phosphate. 32 30 0,0-dimethyl O-(l-ethoxycarbonyl-2-methoxy-2-methoxycarbonylvmyl) phosphorothioate-.- 73 82 0,0-dimethyl 0-(2-isopropylthio-2-N,Nhtmethylcarbamyl-vinyl) phosphate- 60 0,0-diethyl 0-(2-isopropylthio-2-N,N-dimethylearbamyl-vinyl) phosphate- 45 0,0-dimethyl 0-(1-methyl-2-ohloro-2-N.N-diethylearbamyl-vinyl) phosphate 1 B 4 2 5 2 5 2 5 l Phosphamidon, known from Belgian Patent No. 552,284. 3 Hours.

(3) Effect as insecticidal stomach poison Potato greens are dipped in a 0.1% aqueous solution of the active substance (obtained from a 10% emulsifiable concentrate). After the coating has dried, Colorado potato bettles (Leptinotarsa decemlineata) are placed on the greens.

In the following Table 6 the time is given in minutes and in hours after which all (100%) of the animals are in dorsal position.

bamyl-vinyl) phosphate.

in 300 ml. of benzene (anhydrous). The mixture is stirred for 7 hours at room temperature. Then 29 g. of 0,0-dimethyl O-chlorophosphate, dissolved in 25 ml. of benzene (anhydrous), are added dropwise. The reaction mixture is stirred for 24 hours at room temperature and then shaken out with 200 ml. of water. The organic phase is separated, dried and freed of solvent. The crude product is distilled in vacuum. The 0,0-dimethyl O-(2-ethoxy-Z-ethoxycarbonyl-vinyl) phosphate has a boiling point of l19-124/0.45 mm.

Analysis.Calcd. (percent): C, 40.3; H, 6.4; P, 11.5. Found (percent): C, 40.3; H, 6.3; P, 11.3.

EXAMPLE 2 (a) 32.2 g. of ethanol (anhydrous) are added dropwise to 8 g. of sodium, emulsified in 150 ml. of toluene (anhydrous), and stirred for one hour at Then the suspension is cooled to 0-5 and a mixture of 52.6 g. of 2-ethylthio-N,N-dimethylacetamide and 26.5 g. of formic acid ethyl ester in 50 ml. of ether (anhydrous) is slowly added dropwise. After stirring for 16 hours at 05, the sodium salt which precipitates is removed by filtration, washed with 300 ml. of ether (anhydrous) and dried in vacuum.

(b) To a suspension of 9.9 g. of this sodium salt in ml. of benzene (anhydrous) there is added dropwise a solution of 8 g. of 0,0-dimethyl O-chlorophosphorothioate in 25 ml. of benzene (anhydrous). The reaction mixture is stirred for 24 hours at room temperature. After treating with active charcoal, the filtrate is concentrated by evaporation in vacuum. The resultant 0,0-dimethyl O-(2-ethylthio-2 N,N-dimethylcarbamylvinyl) phosphorothioate is purified by chromatography on a column of silica gel and has a refraction index n =l.5243.

7 Analysis.-Calcd. (percent): C, 36.1; H, 6.1; N, 4.7; P, 9.7; S, 21.4. Found (percent): C, 36.0; H, 6.0; N, 4.6; P, 10.2; S, 21.0.

EXAMPLE 3 (a) Following the procedure described in German Pat. No. 708,513, 6.9 g. of sodium are dissolved in 400 ml. of isopropanol and then transferred into an autoclave which has been flushed with nitrogen. Carbon monoxide is pressed on at 70 and 10 bar until no more loss of pressure can be registered. Then 39.6 g. of methoxyacetic acid ethyl ester is introduced into the autoclave which has been flushed with nitrogen. Carbon bar for 7 hours at 70. After cooling, the mixture is filtered and the filtrate is concentrated by evaporation, whereby the enolic sodium salt which forms separates.

(b) The sodium salt which is obtained is suspended in 500 ml. of benzene (anhydrous) and cooled in an ice bath to -6". Then 43.35 g. of 0,0-dimethyl O- chlorophosphate, dissolved in 50 ml. of benzene, are added dropwise. The reaction mixture is stirred for 24 hours at room temperature and then shaken out twice with 150 ml. of water. The organic phase is separated, dried and freed from solvent. The crude product is distilled in vacuum. The resultant O, O-dimethyl O-(2- methoxy-Z-isopropoxycarbonyl-vinyl) phosphate boils at 97/0.01 mm.

EXAMPLE 4 A mixture of 17.7 g. of methoxyacetic acid ethyl ester and 21.9 g. of oxalic acid diethyl ester is added dropwise 8 at 06 to a suspension of 6 g. of sodium hydride in mineral oil) in 200 ml. of benzene (anhydrous). The mixture is then stirred for 2 hours at 0-6, 16 hours at room temperature, and 1 hour at 4045. Then 21.6 g. of 0,0-dimethyl O-chlorophosphate, dissolved in 25 ml. of benzene (anhydrous) are added dropwise at 06. The reaction mixture is stirred for 24 hours at room temperature and then shaken out with ml. of water. The organic phase is separated, dried and concentrated by evaporation. The crude product is distilled in vacuum. The 0,0-dimethtyl O-(1,2-bis-ethoxy-carbonyl-Z-methoxy-vinyl) phosphate obtained boils at 136/0.005 mm.

EXAMPLE 5 The solution of the enolic sodium salt obtained from Example 3(a), above, can be reacted directly, without previous evaporation, with the 0,0-dimethyl O-chlorophosphate. While cooling with an ice bath, 43.35 g. of 0,0-dimethyl O-chlorophosphate are added dropwise to the aforesaid salt solution. The reaction mixture is stirred for 24 hours at room temperature and then evaporated in vacuum. The residue is extracted with 500 ml. of ether and the solution obtained is shaken out with 150 ml. of water. The organic phase is separated, dried and freed of solvent. After distillation in vacuum, 0,0-dimethy1 O-(2-methoxy-Z-isopropoxycarbonyl-vinyl) phosphate is obtained.

The following table contains other examples of phosphates of Formula I which have been prepared by the methods described in the previous examples:

Compounds Physical data 0,0 dimothyl O-(2-methoxy-2-methoxycarbonyl-vlnyl) phosphate 0 ,O-dimethyl O-(2-propoxy-2-rnethoxyearbonyl-vinyl l) phosphat phosphate..."

B.P. saw/0.003 tort.

I B.P. 119-122/0.02 torr. B.P. 122123/0.01torr.

0,0-dlmethyl O-(2-isopropoxy-B-methoxycarbonyl-vinyl) phosphate B.P. 109110/0.005 torr. 0,0,-dimethyl O-(2-propoxy-2-ethoxyoarbonyl-vinyl) phosphate 0,0-di1nethol O-(2-propoxy-2-propoxyearbonyl-vinyl) phosphate 0,0-dimethyl O-(2-propoxy-2-pentyloxycarbonyl-viny1) phosphate-.- 0,0-dimethyl 0-(2-pentyloxy-Z-pentyloxyearbonyl-vinyl) phosphate.

0,0-diothyl 0-(2-n1ethoxy-2-isopropoxycarbonyl-vinyl) phosphate B.P. 104105/0.02 torr.

0,0-dicthyl 0-(2-othoxy-2-cthoxycarbonyl-vinyl) phosphate. 0,0-dimethyl O-(1,Zdimethoxycarbonyl-Z-methoxy-vinyl) nhosnhata B.P. 138139/0.015 ton.

0,0-diethyl O-(2-n-propoxy-Z-methoxyearbonyl-vinyl) phosphate B.P. 104108/0.04 torr.

0,0-dimethyl O-(l-ethoxycarbonyl-2-methoxy-2-methoxycarbonyl-vinyl) phosphate 0,0-dimethyl O-(l-ethoxycarbonyl-Z-methoxy-2-isopropoxyearbonyl-vinyl) phosphat 0,0-diethy1 O-(1-ethoxycarbonyl-2-methoxy-2-methoxycarbonyl-vinyl) phosphate- 0,0-dimethy1 O-(l-trifluormethyl-Z-methoxy-2-isopropoxyearbonyl-vinyl) phosphate 0,0-diethyl O-(1-trifiuormethyI-Z-methoxy-2-methoxyearbonyl-vinyl) phosphate 0,0-dimethyl O-(1-trifluormethyl-2-methylthlo-2-m hoxycarbonyl-vin 0,0-dimethy1 O-(Z-methy1thio-2-N,N-dlmethylcarbamylvinyl) phosphate.

,O-diethyl O-(2-methylthio-2-N,N-dlmethylcarbamylvinyl) phosph e 0,0-dimethyl O-(2-ethylthio-2-N,N-dimethylcarbamyl 0,0-dimethy1 O-(2-n-propylthio-2-N N-diethylearbamylvinyl) phosphate..- 0,0-dimethyl O-(2-isopropylthio-2-bi-N dimechylcarbamylvinyl) phosphate imethylcarbamylvlnyl) phosphate 0,0-dimethyl O-(2-methoxy-2-methoxycarbony1-vinyl) phosphorothioate.... 0,0-dimethyl 0-(2-methoxy-2-ethoxyearbonyl-vlnyl) phosphorothioate phosphate 0,0-dimethyl O-(2-methoxy-2-isopropoxyearbonyl-vinyl) phosphorothioata. B

0,0-dimethyl O-(2-methoxy-2-sec. butoxycarbonyl-vlnyl) phosphorothioate- B 0,0-dimethyl O-(2-propoxy-Z-methoxycarbonyl-vlnyl) phosphorothioate- B 121122/0.01 torr. 0,0-dimethy1 O-(2-n-propoxy-Z-ethoxycarbonyl-vinyl) phosphorothioetm B. 116117/0.01 torr. 0,0-dimethyl O-(2-n-propoxy-2-n-propoxyearbonyl-vinyl) phosphorothioate B. 127136/0.03 torr. 0,0-dimethy1 0-(Z-n-propoxy-2-n-penty1oxy-vmyl) phosphorothioate B.P. 106110/0.01 torr. 0,0-dimethyl O-(2-n-pentyloxy-2-n-pentyloxycarbonyl-vlnyl) phosphorothioate B.P. 118124/0.04 torr. 0,0-dimethyl O-(2-methy1thio-2-ethoxycarbonyl-vinyl) phosphorothioaton i150 0,0-dimethyl 0-(2-methylthio-2-N,N-dimethylcarbarnylvinyl) phosphorothioate 0,0-dimethy1 O-(2-n-propy1thio-2-N,N-diethylcarbamylvinyl) phosphorothioate- 0,0-dimethyl O-(2-isopropylthio-2-N,N-dimethylearbamylvlnyl) phosphorothioate.

0,0-dimethyl O-(2-propoxy-2-eth0xycarbonyl-vlnyl) phosphorothioate 0,0-dimethyl O-(2-pentyloxy-2-pentyloxycarbonyl-viuyl) phosphorothioate...

0,0-dimethy1 O-(l-ethoxyearbouyl-Z-methoxy-Z-methoxycarbonyl-vinyl) phosphorothioatm. B.P. 138/0.05 torr. 0,0-diethyl O-(2-methoxy-2-methoxycarbonyl vinyl) phosphorothioate B.P 103-105/0.01 torr. 0,0-diethy1 0-(2-rnethoxy-2-ethoxyearbonyl-v1nyl) phosphorothioate" B.P 111113/0.02 torr. 0,0-dethy1 0-(Z-ethoxy-Z-ethoxyearbonyl-vinyl) phosphorothioate.. B.P 99101/0.03 torr 0,0-diethyl O-(Z-n-propoxy-2-methoxyearbonyl-vinyl) phosphorothioate B.P. 109110/0.03 torr. 0,0-diethyl O-(2-metl1ylth1o-2-ethoxycarbonyLvinyl) phosphorothloate n =l,5100. 0,0-diethyl O-(2-methylthio-2-N,N-dimethylearbamy1vin l) phosphoro nn 0,0-dietl1yl O-(2-ethylthio-2-N,N-dimethylcarbamylvlnyli hosphorothioato m =1.5110. 0,0-diethy1 O-(2-n-propylthio-2-N,N-diethylearbamylvinyli hosph0r0thl0ate. 0,0-diethy10-(2-isopropylthio-2N,N-dimethylcarbamylvinyl phosphorothloate.. 1m =1.5085.

O ,O-di-n-propyl O-(2-n-propoxy-Z-n-propoxycarbonyl-vtlnyl) phosphorothioate The production of pesticidal compositions according to the invention is performed in known manner by intimately mixing and grinding the active substances of the Formula I with suitable carriers, optionally with the addition of dispersing agents or solvents, which are inert towards the active substances. The novel active substances can be prepared in the following forms:

solid preparations: dusts, scattering agents, granulates,

(coated granulates, impregnated granulates and homogeneous granulates);

water-dispersible concentrates of the active substance:

Wettable powders, pastes, emulsions;

liquid preparations: solutions, aerosols.

The concentration of active substance in these preparations is from 0.01 to 80% by weight. In the case of concentration type formulations according to this invention the amount of active substance in these compositions is generally 0.5 to 80% by weight. The concentration of active substance in application type formulations usually ranges from 0.1 to 1.5%, preferably from 0.01 to 0.5% by weight. Other biocidally active substances or agents can be admixed with the agents according to the invention. Thus, in addition to the said active substances of the Formula I and salts thereof, the new compositions contain, for example, other insecticides, fungicides, bactericides, fungistatic and bacteriostatic substances or nematocides in order to broaden the range of action. The compositions according to the invention may further contain plant fertilizers, trace elements etc.

The following forms for application of pesticidal compositions according to the invention are presented to illustrate the invention, where not expressly stated otherwise, parts mean parts by weight.

Dust

The following ingredients are used to produce (a) a and (b) a 2% dust:

(a) 5 parts of 0,0-dimethyl O-(Z-methoxy-Z-ethoxy-carbonyl-vinyl)phosphate, 95 parts of talcum, (b) 2 parts of 0,0-dimethyl O-(2-methoxy-2-methoxycarbonyl-vinyl) phosphorothioate, 1 part of highly dispersed silicic acid. 97 parts of talcum.

The active substances are mixed and ground with the carriers. The dusts obtained are used, for example, for the control of cockroaches, etc., in buildings, but also in the protection of plants.

Granulate The following ingredients are used to produce a 5% granulate:

5 parts of 0,0-dimethyl O-(2-ethylthio-2-N,N-dimethylcarbamyl-vinyl) phosphorothioate.

0.25 part of epichlorohydrin,

0.25 part of cetyl polyglycol ether,

3.50 parts of polyethylene glycol (Carbowax),

91 parts of koalin (granular size 0.3-0.8 mm).

The active ingredient is mixed with epichlorohydrin and dissolved with 6 parts of acetone, then the polyethylene glycol and cetyl polyglycol ether are added. The resulting solution is sprayed onto kaolin and then the acetone is evaporated in vacuum. The granulate obtained is suitable for the protection of plants and stored goods.

Wettable powder To produce a (a) 40%, (b) 50%, (c) 25% and (d) 10% Wettable powder, the following components are used:

(a) 40 parts of 0,0-dimethyl O-(2-ethoxy-2-ethoxycarbonyl-vinyl) phosphate, 5 parts of sodium lignin sulphonate, 1 part of sodium dibutyl-naphthalene sulphonate, 54 parts of silicic acid,

10 (b) 50 parts of 0,0-dimethyl O-(2-methoxy-2-methoxycarbonyl-vinyl) phosphorothioate, 5 parts of alkyl aryl sulphonate (Tinovetine B), 10 parts of calcium lignin sulphonate,

1 part of Champagne chalk/hydroxyethyl cellulose mixture (1:1), 20 parts of silicic acid, 14 parts of kaolin, (c) 25 parts of 0,0-dimethyl O-(2-ethylthio-2-N,N-dimethylcarbamyl-vinyl) phosphorothioate, 5 parts of the sodium salt of oleylmethyl tauride, 2.5 parts of naphthalene sulphonic acid/formaldehyde condensation product, 0.5 part of carboxymethyl cellulose, 5 parts of neutral potassium aluminum silicate, 62 parts of kaolin, (d) 10 parts of 0,0-dimethyl O-(2-ethoxy-2-ethoxycarbonyl-vinyl) phosphate, 3 parts of mixture of sodium salts of saturated fatty alcohol sulphates, 5 parts of naphthalene sulphonic acid/formaldehyde condensation product, 82 parts of kaolin.

The active substances are intemately mixed in suitable mixers with the additives and ground on appropriate mills and rollers. Wettable powders are obtained which may be diluted with water to suspensions of any desired concentration. Such suspensions are chiefly used in plant protection for the control of biting and sucking insects.

Spray To produce (a) a 5% and (b) a 2% spray, the following components are used:

(a) 5 parts of 0,0-dimethyl O-(2-ethoxy-2-ethoxy-carbonyl-vinyl) phosphate, 1 part of epichlorohydrin, 94 parts of benzine (boiling range l60l90 (b) 2 parts of 0,0-dimethyl O-(Z-methoxy-Z-methoxycarbonyl-vinyl) phosphorothioate, 3 parts of 4,4'-dichlorodiphenyl-trichloroethane, 95 parts of kerosene.

These solutions are sprayed with pressure sprayers. The solution (a) is advantageously used for the control of aphids on fruit trees and other plants. The solution (b) is used in particular for the control of flies and mosquitoes in living quarters, warehouses and slaughterhouses.

'Emulsifiable concentrate For the production of a 25% emulsifiable concentrate:

25 parts of 0,0-dimethyl O-(2-ethoxy-Z-ethoxycarbonylvinyl) phosphate,

5 parts of epoxidizcd vegetable oil,

5 parts of composite emulsifier (alkylaryl-poly-ethylene glycol/calcium alkylaryl-sulphonate) 65 parts of xylene are mixed together. This concentrate may be diluted with water to any desired concentration. Such concentrates are particularly suitable for the control of insects in granaries, warehouses and on cultivated plants.

We claim:

1. A compound of the formula R2 I ia 1 24 s wherein X represents oxygen or sulphur R and R each independently represent a lower alkyl radical, R represents hydrogen, a lower alkoxycarbonyl or trifluoromethyl radical,

12 R represents a lower alkoxy, alkylthio or dialkylamino dimethyl O-(1-ethoxycarbonyl-2-methoxy-2-methoxycarradical and bonyl-vinyl) phosphate.

R represents a lower alkoxy radical, or 7. A compound as defined in claim 1, which is 0,0-

R represents a lower alkylthio radical and diethyl O-(2-isopropy1thio 2 N,N dimethylcarbonyl- R represents a dialkylamino radical. 5 vinyl) phosphorothioate.

2. A compound as defined in claim 1, which is 0,0- dimethyl O-(2-methoxy-Z-ethoxycarbonyl-vinyl) phos- References cued phate UNITED STATES PATENTS 3. A compound as defined in claim 1, which is 0,0- 3,229,000 1/1966 Lorenz et a1. 260-943 dimethyl O-(2-methoxy-2-isopropoxycarbonyl-vinyl) phos- 10 3,278,648 10/ 1966 Turner et a1. 260-94l phate. 3,369,062 2/1968 Ward 260943 4. A compound as defined in claim 1, which is 0,0- dimethyl O-(2-n-propoxy 2 n propoxycarbonyl-vinyl) LEWIS GOTTS, Primary Examiner Phosphorothioate- R. L. RAYMOND, Assistant Examiner 5. A compound as defined 1n claim 1, WhlCh 1s 0,0- 15 dimethyl O-(Z-methoxy 2 isopropoxycarbonyl vinyl) phosphate. 260-942, 943, 973; 424-211, 212

6. A compound as defined in claim 1, which is 0,0- 

